Year Dollars 1992-01-01 555961 1997-01-01 2890349 2003-01-01 31148411 2004-01-01 24521751 2005-01-01 20571925 2006-01-01 22378887 2007-01-01 21178780 2008-01-01 17876555 2009-01-01 24738348 2010-01-01 17040832 2011-01-01 17887129 2012-01-01 25975131 2013-01-01 34221911 2014-01-01 15510431 2015-01-01 23525473 2016-01-01 32470385